"The Keating Floating Sinker was surely a fascinating idea that seemed to have hooked more than a few anglers, even if it didn't help hook many fish. Produced by the Keating Manufacturing Corporation in Denver, Colorado in the 1950s, they are not sinkers in the traditional sense, but a hollow metal tube designed to slowly sink a fisherman's bait. This early example of "count-down" fishing is best summed up in the company's paperwork, which declared boldly "The name 'Floating Sinker' is not as contradictory as it may appear…Left motionless in the water, it will sink, retrieved slowly, it will rise, retrieved at full speed it will skip along the surface of the water." It was made in three sizes and in at least three metallic finishes. The company also made some wicked spring-loaded lures. The value of the Floating Sinkers in their original plastic case is $10-$20. You can see some examples of Keating Floating Sinkers by clicking here."